Sufficient Evidence to Say that Batting Average has Improved

Question

Adrian hopes that his new training methods have improved his batting average. Before starting his new regimen, he was batting 0.220 in a random sample of 50 at bats.  For a random sample of 24 at bats since changing his training techniques, his batting average is 0.375.  Determine if there is a sufficient evidence to say that his batting average has improved at the 0.10 level of significance.

(Note: even though the term average is used think of these in terms of percent’s or proportions.)

Summary: This question belongs to statistics and discusses about Adrian hopes that his new training methods have improved his batting average and to determine if there is a sufficient evidence to say that his batting average has improved.

Total word count: 155